After login user is not redirected to the specific page in PHP

Question

After user login into database, he should be redirected to index.php, but all I get is warning message: "Cannot modify header information - headers already sent by (output started at..."

This is my input form:

<form action="login.php" method="post">
<div id="header"><h2 class="sansserif">Login</h2></div>
<table>

    <tr>
        <td>Enter Username:</td>
        <td> <input type="text" name="username" size="20"></td>
    </tr>

    <tr>
        <td>Enter Password:</td>
        <td><input type="password" name="password" size="20"></td>
    </tr>
    <tr>
         <td><input type="submit" value="Log In"></td>
         <td><a href="signup.html">Sign Up</a></td>
   </tr>
 </table>
</form>

This is my code:

<?php 
include("configuration.php"); 
$username = $_POST["username"];
$password = $_POST["password"];
$match = "select id from $table where username = '".$_POST['username']."'and password =         '".$_POST['password']."';"; 
$qry = mysql_query($match);
$num_rows = mysql_num_rows($qry); 
if ($num_rows <= 0) { 
echo "Sorry, there is no username $username with the specified password.";
echo "Try again";
exit; 
} else {
$_SESSION['user']= $_POST["username"];
header("Location:index.php");
}?>

As a side note, your select query is vulnerable to SQL injection. http://php.net/manual/en/security.database.sql-injection.php — Space, Apr 21 '13 at 14:38
Check if in your configuration.php file you don't have white spaces after and before ``. — Marcelo Pascual, Apr 21 '13 at 15:06

score 0 · Answer 1 · answered Apr 21 '13 at 14:32

0

Check that you have no whitespace before or after your PHP tags. I can see 3 spaces at the start which could be causing"cannot modify header information".

answered Apr 21 '13 at 14:32

Space

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score 0 · Answer 2 · answered Apr 21 '13 at 15:19

0

first try commenting header() function check if there is any output on the browser. If nothing check your configuration.php maybe something is being echoed or printed.

answered Apr 21 '13 at 15:19

Abhishek Salian

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After login user is not redirected to the specific page in PHP

2 Answers2